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United States Patent | 5,637,869 |
Bergmann | June 10, 1997 |
Ions passing through inhomogeneous electric fields in the detector of a time-of-flight mass-spectrometer may need different times on different paths(11) between the entrance aperture and the ion-electron conversion surface(3). These errors in flight time can be reduced by properly deforming the conversion surface(3).
Inventors: | Bergmann; Thorald (Buchenweg 9a, 82441 Ohlstadt, DE) |
Assignee: | Bergmann; Thorald (Ohlstadt, DE); Bergmann; Eva Martina (Ohlstadt, DE) |
Appl. No.: | 269545 |
Filed: | July 1, 1994 |
Jul 02, 1993[DE] | 43 22 104.1 |
Current U.S. Class: | 250/287; 250/397 |
Intern'l Class: | H01J 049/40 |
Field of Search: | 250/287,397 |
4472631 | Sep., 1984 | Enke et al. | 250/287. |
5160840 | Nov., 1992 | Vestal | 250/287. |
Foreign Patent Documents | |||
9219367 | Nov., 1992 | WO. |
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